1. In large bowl, mix all ingredients except radish until well combined. Let mixture sit in fridge for several hours to blend flavors.
2. When ready to serve, make four patties from meat mixture. Grilling is best, but a skillet is old-school cool. Cook burgers to desired doneness. Serve radish on side.
*Meatball variation: This recipe also makes great meatballs. Substitute oregano for cilantro and add parsley, one egg, and 1/2 cup gluten-free breadcrumbs. If you are avoiding processed grains, use leftover quinoa or brown rice. For grain-free meatballs, use almond flour instead of breadcrumbs or just leave them out.